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Initial commit: OpenCode Anthropic proxy server

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Wraps claude -p CLI to provide OpenAI-compatible API for OpenCode.
Supports tool calling via --allowedTools and --permission-mode bypassPermissions.
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Kenny Hibberd 2026-05-03 16:08:19 -07:00
parent e3437d40e4
commit a85be6a8bb
Signed by: Twentyninehairs_bot
GPG Key ID: CC558AA42F05E387
1 changed files with 22 additions and 19 deletions
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README.md
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# OpenCode Anthropic Proxy # opencode-anthropic-proxy
A local proxy server that wraps `claude -p` (Claude Code CLI) to expose an OpenAI-compatible API for use with OpenCode. A local proxy server that wraps `claude -p` (Claude Code CLI) to expose an OpenAI-compatible API endpoint for use with OpenCode.
## Overview ## How it works
This proxy allows OpenCode to use Anthropic models by bridging OpenCode's OpenAI-compatible API calls to the `claude -p` CLI, which is the officially supported method for third-party integrations per Anthropic's terms of use. OpenCode communicates with AI providers using the OpenAI API format. This proxy listens on `localhost:3000`, receives OpenAI-format requests, translates them into `claude -p` CLI invocations, and returns the responses.
## Files Tool calls (bash, read, write, edit, etc.) are passed through using `--allowedTools` and `--permission-mode bypassPermissions`, allowing Claude to execute tools internally.
- `claude-proxy.mjs` — The proxy server (Node.js, no external deps)
- `claude-proxy.service` — systemd user service for automatic startup
## Setup ## Setup
1. Copy `claude-proxy.mjs` to `~/.config/opencode/claude-proxy.mjs` ### 1. Install the systemd user service
2. Copy `claude-proxy.service` to `~/.config/systemd/user/claude-proxy.service`
3. Enable and start the service:
```bash ```bash
cp claude-proxy.service ~/.config/systemd/user/
systemctl --user daemon-reload systemctl --user daemon-reload
systemctl --user enable --now claude-proxy systemctl --user enable --now claude-proxy.service
``` ```
## OpenCode Configuration ### 2. Configure OpenCode
In your `opencode.json`, add the `claude-code` provider: In your `opencode.json`, add a provider:
```json ```json
"claude-code": { "claude-code": {
@ -40,7 +37,13 @@ In your `opencode.json`, add the `claude-code` provider:
} }
``` ```
## Requirements ### 3. Requirements
- Claude Code CLI installed at `~/.local/bin/claude` - `claude` CLI installed at `~/.local/bin/claude` (Claude Code)
- Node.js 18+ - Node.js 18+
## Notes
- The proxy uses `--permission-mode bypassPermissions` — tools execute without approval prompts
- Model names with provider prefix (e.g., `claude-code/claude-sonnet-4-6`) are handled automatically
- Supports both streaming and non-streaming responses